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<H1>get_delta(?Var, -Width)</H1>
Returns the width of the interval of Var.
<DL>
<DT><EM>Var</EM></DT>
<DD>A variable or a number
</DD>
<DT><EM>Width</EM></DT>
<DD>Width of the interval
</DD>
</DL>
<H2>Description</H2>
<P>
   Returns the width (Hi - Lo) of the interval of Var.  If Var has not been
   declared before, it will be turned into an unrestricted real variable.
   If Var is a ground number, the width will be calculated appropriately
   based on its type.</P>

<H3>Modes and Determinism</H3><UL>
<LI>get_delta(?, -) is det
</UL>
<H2>See Also</H2>
<A HREF="../../lib/ic/get_median-2.html">get_median / 2</A>, <A HREF="../../lib/ic/get_bounds-3.html">get_bounds / 3</A>
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